Busy line recorder



Jan. 6, 1942. R. E. HERSEY BUSY LINE RECORDER Filed oct. 24, 1959 8Sheets-Sheet l Jan. 6, 1942. R. E. HERSE'Y BUSY LINE RECORDER Filed Oct.24, 1939 8 Sheets-Sheet 2 NPN NUK

A 7' TOR/VE V `Ian. 6, 1942. l R, E, HERSEY 2,268,984

BUSY LINE RECORDER Fil'ed Oct. 24, 1959 8 ShetS-Sheet 4.

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,Busy LINE RECORDER I Filed oct. 24, 1959 s sheets-sheet e III|HEHE/955V' Jan, s, 1942.

ATTORNEY.

Jan. 6, 1942. yFe. E. HERsEY A2,268,984 l BUSY LINE RECORDER Filed oct.24, '19:59l s sheets-sheet y'r Y 5vAv ATTORNEYA RE. HERsEY 2,268,984BUSY LINE RECORDER Filed Oct. 24, 1959 8 @beets-Sheet 8f ATTORNEY EHERSEY By @e M' Jan. 6, 1942.

Patented Jan. 6, 1942 UNITED ,n STATES PATENT Q'IFFICEl 2,268,984 y vBUSY LINE REooitDER- Ralph E. Hersey, Madsongll. Jl, assignor to Bell',-

T'elephone Laboratories;- Ifncorporated, New York, N. Y., acorporation'. of *New York A Application October 24, 1939, Serial No.300,928' 7 claims. lor 'irs- 5.6)

This invention relates to telephone systems and has for its object tofacilitate the recording of certain traino conditions.

It is frequently desirable to determine whether an excessive number ofcalls fail because of a busy condition on a subscribers line.Arrangements for` this purpose have, in the past, required that one ormore conductors, individual to the called linebe opened to permit theinsertion of the recording equipment.

lIn accordance with the present invention, al

connected individually to jacks corresponding to the ten digits to 9.When a line is to be observed, plugs are inserted in the jackscorresponding to the line number, thereby preparing circuits for a setof relays, one for each digit register. A set of jacks, a set of relaysand a meter are provided for each lineto beV observed. When the markerfinds a line busy it connects with the recording mechanism and theregistersA are set in accordance with-the Wantedline des'- ignation. Ifthe registered designation corresponds vto one of the designationsplugged. up on the sets of jacks, the set of relays is operated and acircuit closed for the corresponding meter.A If the `registereddesignation does not match any of the designations being observed, atiming. means releases themarker from the recordingL mechanism. When aplurality of oilicesis served by the same markers, means is also.provided for identifying the office. s

The invention will be more clearly understood from a consideration ofthe following description in connection with the drawings in which:

Fig. 1 discloses the timed release means andone register;

Fig. 2 shows the connecting relays and a setof jacks corresponding tothe register of Fig. 1;

Fig. 3 shows two sets of checking relays and their meters as well as asecond set of jacks;

Fig. 4 shows the remaining registers;

Figs. 5 and 6 show the sets of jacks corresponding to the registers ofFig. 4 for observing on twolines;

Figs.. '7 and 8 show portions of a decoder marker as wel-lv as the oicerelays and jacks of the recorder; and j Fig. 9 shows the manner in whichFigs. 1 to 8 should be arranged. l

terminating marker with which the present 'invention would function isdisclosed in U. S. Patent-2,089,921,granted AugustlO, 1937, to W. W.Carpenter; y: y A

Asl seti forthA 'in the above-identified patent, whenla wantedline'number has been recorded in aterminating sender, the markerconnector associates the sender registers with the registers of an idlemarker. The sender transmits the designation to the marker by groundingconductors leading to fthe' marker .register relays. The marker connectswith the Wanted line to test Whether it is ybusy or idle and if the lineis busy operates .la busy-back relayY which controls the transmission ofa busy signal to the calling subscriber.'

Assuming' that the wanted line number 0298 is to` be recorded in themarker, none of the conductors 8M to 804 leading to the thousandsregister 880 will be grounded, but conductor 8l2 leading to the hundredsregister 8H), conductors 823v and 824 leading tothe'tens register 820and co'nductors 831, 832 and 834 leading to the units register 830 willbe grounded.

If this number represents a line on which it is desired to record thenumber of lost calls, the number will be set up on the' linel overowrecorder. To do this, plugs will be inserted in one of the sets of jacksassociated with the recorder.

For example, plug 2 I 0 will be inserted in jack' 200,'

plug 530 in jack 502', plug 53| in jack 5|9 and plug 532 in jack-528.

The present disclosure shows the overflow recorder as used in a buildingwhich houses'two ofces where the markers are common to both. Thisarrangement is shown et al. Such markers receive an indication of theo'ice'in which the called line terminates by the relay 104 operated, todenote a vcall for the B oce, relay 103 is operated. .These relays, 'inaddition to other functions, prepare circuits :for relays 850 and 'vSince, underjthe above condition, lthe same:vr

number may appearinthe two oices, relays"850" and 8.5i each control acircuit for each meter,l these circuits eac-h extending` through a jack-such in Patent No.'y 2,261,370, granted Nov. 4, 1941, to R. E. Hersey'as jack 845, whereby the meter and its associated equipmentI isindividualized to a particular o'ice. Assuming that the line 0298 beingobserved is in ofhce A, vplug 844 Will be inserted in jack 848. Whenthis line is called relay 104 will be normal and relay 102 operated.

By way of further illustration, assume that plugs 350, 830,'53I and 632are inserted in jacks 30|, 002, 8|9 and 628, respectively, and that plug846 is inserted in jack 841 in order to observe on line 1298 of oice B.

Assume now that the marker imds line 0298 of oiiice A busy. This resultsas detailed in the above-mentioned Carpenter patent in the operation ofbusy-back relay 853. Relay 853 in turn operates relay 852 which closes acircuit to call in the overflow recorder. This circuit may be traced, ifthe recorder is idle, from ground on the sleeve of jack 848, plug 844,tip of jack 848, front contact of relay 852, conductor 855, normalcontacts of relay 2|4, winding and normal contacts of relay 2|3, upperback contact of relay 2|4 to battery at the lowermost back contact ofrelay |04. Relay 2|3 operates locking over its lower alternate contactsand the outer lower back contacts` of similar relays corresponding toother markers, outer lower back contact of relay 2|| to battery. Relay2|3 closes a circuit from ground at its uppermost contact to the windingof relay |04 and that relay operates, removing battery from the windingsof relays 2| l, 2|3, etc., to prevent any other marker from seizing therecorder.

Relay |04 also closes a circuit from ground at its uppermost contact,upper normal contacts of relay 2| and the intermediate marker relays,upper front contact of relay 2|3, conductor 2|5 to the windings ofrelays 10D and 10| in the marker. Relays 180 and 18| connect the markerregisters to the recorder registers. In the Ypresent case they extendgrounded conductor 8|2 to the winding of relay 402 in the hundredsregister 408, conductors 823 and 824 to the windings of relays 4I3 and4|4 in the tens register 4|0 and conductors 83|, 832 and 834 to thewindings of relays 42|, 422 and 424 in the units register 420, causingthese relays to operate.

Relay 100 also transfers the oilice identification to the recorder byclosing a circuit from ground at the right contact of relay 103, next tolowermost contact of relay 100, winding of relay 850 and battery.

With both relays 180 and 10| operated, a circuit is closed from groundover the uppermost contact of relay 10|, lowermost contact of relay 100,conductor 105, normal contacts of relay |I, winding of relay |03 andbattery. Relay |03 connects ground to the winding of relay |04` to holdthat relay operated. With relay |83 normal, when relay 2 I 3 operates acircuit is closed from battery, over the lower normal contacts of relay|03, upper winding of relay |02, back contact of relay |03 to ground atthe uppermost contact of relay 2|3. Relay |02 which is a polarized relayis energized in this circuit to hold its armature against its rightcontact. When relay |03 operates, it opens, at its upper back contact,the shunt around condenser ||5 and resistance H6 whereby a chargingcircuitfor condenser ||5 is effective from battery over the loweralternate contacts of relay |03, through the upper winding of relay |02through resistance IIB, lower back contact of relay |05, condenser I I5to ground at the upper front contact of relay |03. At the same time itcloses a circuit from batteryy over itslower alternate contacts,resistance |06, lower winding of relay |02 to ground at the inner upperfront contact of relay |03. This circuit energizes relay |02 in adirection to close its left contact, but because of the closure of thecharging circuit of condenser H5, the charging current for the condenserdelays the closure of that Contact for a definite minimum interval. Whenthis contact is closed, ground on conductor 105 is extended over theleft contact of relay |02, upper back Vcontact of relay |05 andconductor |01 to the armatures of relays lll, 40|, 4H and 42|, therebygrounding the sleeves of certain jacks as determined by the registrationset up.

Since none of the relays of thousands register |00 were operate-d, thecircuit may be traced over the back contacts of relays II2, I|3 and H4to conductor |20 and the sleeves of jacks 208, 380, etc. Since plug 2|0is in jack 200, the circuit extends over the ring of jack 200 to theWinding of relay 38| and battery. No plug being in jack 300, no circuitis completed for relay 34|.

With relay 402 of` the hundreds register 400 operated ground is extendedover the back contact of relay 40|, upper front contact of relay 402,middle upper back contact of relay 404 to conductor 432, through jack582 and plug 530 to the winding of relay 332 and through jack 602 andplug 630 to relay 342, relays 332 and 342 operating.

Similarly, the tens register 4|0 extends ground to conductor 449 andthrough jacks 5|9 and 6|9 to rel-'lys 333 and 343, respectively, whilethe units register 420 extends ground to conductor 458 and through jacks528 and 628 to relays 334 and 344, respectively.

Since relays 33|, 332, 333 and 334 are all operated, an additionalholding circuit is closed for relay |04 over the outer left contacts ofrelays 33| to 334. In addition, a circuit is closed from ground on thesleeve of jack 848, plug 844, ring of jack 848, inner upper frontcontact of relay 850, conductor 858, inner left front contacts of relays33| to 334, winding of relay 335 and battery. Relay 335 locks over itsinner right contact to the normal contact of meter 338 and closes anobvious circuit for that meter, thereby insuring the complete operationof the meter. At its left contact, relay 335 closes a circuit fromground over the right contacts of relays 33| to 334, left contact ofrelay 335, outer lower front contact of relay 2|3 to the winding ofrelay 2|4 and. battery. Relay 2|4 operates and locks over its loweralternate contact to conductor 855, therefore remaining operated untilreleased by the marker. When operated, relay 2|4 opens the circuit ofrelay 2|3, which restores the preference circuit permitting othermarkers to seize the recorder. Relay 2|3 in releasing opens the circuitof relays 100 and 10| which in turn remove ground from conductor 105,thereby restoring the register relays.

Since relay 34| was not operated, the operation of relays 342, 343 and344 was ineffective and no record was made on meter 346.

If the call had been for line 0298 in oiiice B, relay `would have beenoperated. Conductor 85B alsoV extends to relay 85|, but the circuit isopen at jack 849 and therefore no record would be made.

If the number of the busy line had differed from all of those pluggedup, the operationwould have proceeded as above described until relay |02operated. When relay |02 grounded conductor- |01 this ground extendedthrough the winding ofrelay |01 to` battery and rel`ayf|0| operated.

At its .'inner; upper contact, relay |0`I' closes a supplementaryholding `circuit for relay-|04. At

its lower alternate contact, it closes a locking circuit for itselftoAgrounded .conductor` 105 and vopens the circuit of relay |03. Relay |03ropens ythe circuit through the lower winding of relay '|02 and reclosesthe circuit through the upper winding, causing relay*` |02 to close itsright contact. The closure of this contact completes a circuit fromgrounded conductor 105, right contact of relay |02, upper front contactof relay 10|, winding of relay |05 and battery..

.f Relay locks to conductor 105 and reoperates relay |03. Relay |03again closes the circuit toV cause relay |02 to close its left contact,but since relay A||5 has opened the charging cirplace without delay. Acircuit is now closed from ground on conductor 105, left contact ofrelay |02, outer upper front contact of relay |05, outer lower frontcontact of relay 2I3 to the winding of relay 2|4 and battery. Relay 2I4functions as previously described to release the recorder from themarker.

Where a record is made, the operation of relay 2M by relay 335 takesplace before these operations are completed and, by causing the removalof ground from conductor 105, releases these relays before theiroperation is completed.

While the present disclosure shows the recorder registers connected tothe same conductors as set the marker registers, it is within thecontemplation of the invention to supply appropriate registers andconnect them with the conductors duplicate registering means to marksaid conduc. tors in accordance with said called line designation, ameter, and means effective if saidrduplicate .registering means marksthe manually marked conductors to operate said meter.

3. In a telephone system in which connections between subscribers linesina plurality of ofces Acuit through condenser H4, this closure takesoutgoing from the marker registers to other I marker equipment.

If used where only a single oflice is served, relays 850 and 85| and theofce jacks may be omitted, direct ground being supplied where required.

What is claimed is:

1. In a telephone system in which connections between subscribers linesare made by switching equipment under the control of a control device,said control device having means for registering the designation of acalled line and means responsive to said registration for testing saidline to determine its busy or idle condition, duplicate designationregistering means, a set of conductors, manual means for marking saidconductors in accordance with a particular line designation, meanscontrolled by said testing means if said called line is busy to connectsaid control device to said duplicate registering means and to registerthe called line designation thereon, means under the control of saidduplicate registering means to mark said conductors in accordance withsaid called line designation, indicating means, and means eiective ifsaid duplicate registering means marks the manually marked conductors tooperate said indicating means.

2. In a telephone system in which connections between subscribers linesare made by switching equipment under the control of a control device,said control device having means for registering the designation of acalled line and means responsive to said registration for testing said nline designation, means under the control of said are made by switchingequipment in each of said oflices under the control cfa control devicecom.

mon to said oices, said control device having means for registering thedesignationrof a called line and the oice in `which saidline terminatesand means responsive to said registration for testing said line tovdetermine its busy or idle condition, means for recording the number oftimes thatsaid control device nds a particular line busy comprisingduplicate designation reg-V istering means, a set of conductors, manualmeans for marking said conductors inaccordance with a particular linedesignation, means for individualizing said manual means to the officein which said line terminates, means underv the control 'of saidduplicate registering means to mark said conductors in accordance withsaid called line designation, a meter, means effective if saidregistering means marks the manually marked conductors vand the properoflice to operate said meter, and means independent of said meteroperating means to release said recording means.

4. In a telephone system, means for recording the number of times a lineis called while busy, comprising a set of jacks for each digit of a linedesignation, means `for individually grounding the sleeves of said jacksin accordance with the designation of a called busy line, relaysconnected in parallel to the ring contacts of each set of jacks, plugsfory connecting the lsleeve and ring contacts of a jack in each setcorresponding with the designation of a particular line, and indicatingmeans controlled by said relays when the designation of the called busyline coincides with that of said particular line.

5. In a telephone system in which connections between subscribers linesare made-by switching equipment under the control of a control device,said control device having means for registering the designation of acalled line and means responsive to said registration for testing saidline to determine its busy or idle condition, means for recording thenumber of times that said control device nds a particular line busycomprising duplicate designation registering means, a set of conductors,manual means for marking said conductors in accordance with a particularline designation, means controlled by said testing means if said calledline is busy to connect said control device to said duplicateregistering means and to register the called line designation thereon,means under the control of saidl duplicate registering means to marksaid conductors in accordance with said called line designation, ameter, means effective if said duplicate registering means marks themanually marked conductors to operate said meter, and means under thecontrol of said meter operating means to release said recording means.

6. In a telephone system in which connections` between subscribers linesare made by switching equipment under the control of a control device,said control device having means for registering the designation of acalled line and means responsive to said registration for testing saidline to determine its busy or idle condition, means for recording thenumber of times that said control device iinds a particular line busycomprising duplicate designation registering means, a set of conductors,manual means for marking said conductors in accordance with a particularline designation, means controlled by said testing means if said calledline is busy to connect said control device to'said duplicateregistering means and to register the called line designation thereon,means under the control of said duplicate registering means to mark saidconductors in accordance with said called line designation, a meter,means elective if said duplicate registering means marks the manuallymarked conductors to operate said meter, means under the control of saidmeter operating means to release said recording means, and meansindependent of said meter operating means to release said recordingmeans.

'7. In a telephone system, means for recording the number of times anyone of a plurality of lines is called while busy, comprising a pluralityof sets of jacks, each set including a roW of jacks for each digit of atelephone designation, each roW including a jack for each possible valueof that digit, an indicating device and a set of relays `for each ofsaid sets of jacks, one of said relays connected in multiple to the ringcontacts of each jack in a row, plugs for connecting the ring andsleeverof one jack in each row of each set in accordance with thedesignations of said plurality of lines, means for grounding the sleevesof one jack in each row of each set in accordance With the designationof a called busy line to operate the relays connected thereto and meansunder the control of said sets of relays to operate the correspondingindicating device when the designation of the called busy line coincideswith the designation of any one of said plurality of lines.

RALPH E. HERSEY.

